API Designer
Design REST and GraphQL APIs. Use when creating backend APIs, defining API contracts, or integrating third-party services. Covers endpoint design, authentication, versioning, documentation, and best practices.
npx skills add majiayu000/claude-skill-registry --skill api-designer-daffy0208-ai-dev-standards --agent claude-code
Same command for any agent — swap --agent for codex, cursor, copilot.
Weekly change comes from our own snapshots, not the repository page — it measures attention, not adoption.
# API Designer Design robust, scalable, and developer-friendly APIs. ## Core Principles ### 1. Developer Experience First - Clear, predictable naming conventions - Comprehensive documentation - Helpful error messages - Consistent patterns across endpoints ### 2. Design for Evolution - Versioning strategy from day one - Backward compatibility - Deprecation process - Migration guides for breaking changes ### 3. Security by Default - Authentication and authorization - Rate limiting and throttling - Input validation and sanitization - HTTPS only, no exceptions ### 4. Performance Matters - Efficient queries and indexing - Caching strategies - Pagination for large datasets - Compression (gzip, brotli) ## REST API Design ### Resource Naming Conventions ``` ✅ Good (Nouns, plural, hierarchical): GET /users # List all users GET /users/123 # Get specific user POST /users # Create user PUT /users/123 # Replace user PATCH /users/123 # Update user DELETE /users/123 # Delete user GET /users/123/posts # User's posts (nested) GET /users/123/posts/456 # Specific post ❌ Bad (Verbs, inconsistent, unclear): GET /getUsers POST /createUser GET /user-list GET /UserData?id=123 ``` ### HTTP Methods & Semant
- Core Principles
- 1. Developer Experience First
- 2. Design for Evolution
- 3. Security by Default
- 4. Performance Matters
- REST API Design
- Resource Naming Conventions
- HTTP Methods & Semantics
- HTTP Status Codes
- Response Format Standards
- Pagination Strategies
- Filtering, Sorting, and Search
- Authentication & Authorization
- Rate Limiting
What does the API Designer skill do?
Design REST and GraphQL APIs. Use when creating backend APIs, defining API contracts, or integrating third-party services. Covers endpoint design, authentication, versioning, documentation, and best practices.
How do I install it?
Run `npx skills add majiayu000/claude-skill-registry --skill api-designer-daffy0208-ai-dev-standards --agent claude-code` — it drops the skill into your project so the agent can pick it up. Swap the --agent value for codex, cursor or copilot if you use one of those.
Where does this skill come from?
From majiayu000/claude-skill-registry, a repository with 534 stars. We read it straight from the repository tree rather than a submitted listing, so what you see here is what is actually published.
Is a popular skill a good skill?
Not necessarily. Stars measure attention, not adoption — a repository can trend for a week and be abandoned. That is why we show the weekly change from our own snapshots next to the total, instead of a single flattering number.